This was taken in 1979. I'm on the left (I was 12 at the time) holding my vintage Star Wars E-11 Stormtrooper blaster toy. A friend of mine is on the right, his skateboard in hand.
I can see they are cords but not sure if they're bell-bottoms. I wouldn't be surprised. Even for me, growing up in the 1970s, I didn't care much for the popular clothing fashions back then. I prefer the 1980s and 1990s more so.